Once one does you can bet they all will. Mercedes isn't making it easy.

It could be worse like the BMW encryption for the F10 M5 engine which no one in the US can seem to crack, necessitating piggyback tunes. I will gladly have my E63's ECU popped out for a reflash over a piggyback tune.

It could be worse like the BMW encryption for the F10 M5 engine which no one in the US can seem to crack, necessitating piggyback tunes. I will gladly have my E63's ECU popped out for a reflash over a piggyback tune.

Indeed. One of the significant reasons I chose the 2015 E63 S over the 2015 M5 CP -- dramatically greater tuneability and power gains (especially torque) from a tune. That and the huge traction/acceleration from a stop and at low speeds advantage of AWD over RWD. And of course, dramatically better intake and exhaust noise.

Indeed. One of the significant reasons I chose the 2015 E63 S over the 2015 M5 CP -- dramatically greater tuneability and power gains (especially torque) from a tune. That and the huge traction/acceleration from a stop and at low speeds advantage of AWD over RWD. And of course, dramatically better intake and exhaust noise.

All logical reasons. And yes, the sound of the new M motors is a disappointment.

5. Better sound system (the HK in the F10 (I have one) is much better than either the stock HK or the $5400 B&O in the E63).

6. Better lease deals and maintenance included. AMG leases are usually a lot higher in price due to higher MFs and lower residuals and Mercedes does not include maintenance.

7. Dinan mods with their warranty that matches BMW's bumper to bumper warranty and Dinan's smooth integration into BMW dealerships who can install even complicated Dinan mods. AMG tuners don't have that other than a partial one through Eurocharged's engine warranty.

8. Much better ED program in terms of discounts. You can approach 15% off MSRP with ED for BMW. The best I was offered with ED for the E63 was 8 percent off MSRP. Also, most MB dealers I contacted were clueless about ED as compared to BMW dealers.

9. More responsive, proactive dealer network. Most MB dealers I contacted in my search for an E63 were quite non responsive -- not knowledgeable and most did not return phone calls or even give me a quote after an initial long conversation. BMW dealers act like they want your business a lot more.

These are all advantages that I see in the M5. But at the end of the day, the E63's greater tuneability and massive gains especially in torque, engine/exhaust noise and the winter traction and starting and low speed acceleration conferred by its AWD won me over.

5. Better sound system (the HK in the F10 (I have one) is much better than either the stock HK or the $5400 B&O in the E63).

6. Better lease deals and maintenance included. AMG leases are usually a lot higher in price due to higher MFs and lower residuals and Mercedes does not include maintenance.

7. Dinan mods with their warranty that matches BMW's bumper to bumper warranty and Dinan's smooth integration into BMW dealerships who can install even complicated Dinan mods. AMG tuners don't have that other than a partial one through Eurocharged's engine warranty.

8. Much better ED program in terms of discounts. You can approach 15% off MSRP with ED for BMW. The best I was offered with ED for the E63 was 8 percent off MSRP. Also, most MB dealers I contacted were clueless about ED as compared to BMW dealers.

9. More responsive, proactive dealer network. Most MB dealers I contacted in my search for an E63 were quite non responsive -- not knowledgeable and most did not return phone calls or even give me a quote after an initial long conversation. BMW dealers act like they want your business a lot more.

These are all advantages that I see in the M5. But at the end of the day, the E63's greater tuneability and massive gains especially in torque, engine/exhaust noise and the winter traction and starting and low speed acceleration conferred by its AWD won me over. My car when it gets the Renntech full tune and sport mufflers will have 716 bhp and 859 lbs-ft. I am very happy it has AWD as I would hate to see the traction control light come on all the time and cut power and my friends with modded M5s/M6s complain that it does.

Actually, i know that the m157's 2014 and upwards ECU does not need to be drilled.
I think it has more to do with the fact that it has screws and can easily be open and sealed back up rather that cracking the Bosch ME7.7.1

Actually, i know that the m157's 2014 and upwards ECU does not need to be drilled.
I think it has more to do with the fact that it has screws and can easily be open and sealed back up rather that cracking the Bosch ME7.7.1

So you mean it's easier to remove than to crack OBD-II flashing essentially?

I need to see a pick from the 2012-2014 ecu's to be sure but my 2015 ecu has screws at the bottom and don't looked to be crazy sealed. So I imagine they just screw it open . then place the pin cable on to kick into test mode or whatever its called where it allows them to upload the map changes.

The ODB handheld is not available yet as they have not cracked the codes yet.
I know Brabus has because i have seen them load it through the ODB, it figures as they work closely with AMG.

I remember reading on a Dimmsport post about them being close, they make the myGenius loader that we use in our Bosh ecu's. So maybe they are close. You could always reach out and ask them